Description

ABB 07KT98 Basic Unit

Configured for PLC processing, onboard I/O execution, and CS31/ARCNET communication, the ABB 07KT98 GJR5253100R0160 (07KT98 Basic Unit) provides direct control and data-processing functions within the Advant Controller 31 (AC31) system.

Hardware Specifications

Parameter	Specification
Model	07KT98 GJR5253100R0160
Brand	ABB
Product Type	Basic Unit
Series	Advant Controller 31 (AC31)
Origin	Sweden
User Program Memory	240 kB
User Data Memory	120 kB
Flash EPROM	512 kB
RAM	2 MB
Binary Flags	8192
Word Flags	8192
Double-Word Flags	1024
Digital Inputs	24 channels, 3 groups of 8
Digital Outputs	16 transistor outputs, 2 groups of 8
Digital Output Current	500 mA
Configurable Digital I/O	8 channels
Analog Inputs	8 channels
Analog Input Ranges	0-10 V, +/-10 V, 0-20 mA, Pt100
Analog Outputs	4 channels
Analog Output Ranges	+/-10 V, 0-20 mA, 4-20 mA
Serial Interfaces	2 x EIA RS-232
CS31 Interface	EIA RS-485
Remote I/O Capacity	Up to 31 remote I/O modules
ARCNET Interface	Integrated, BNC connector
High-Speed Counter	7 operating modes, up to 50 kHz
Data Storage	SmartMedia card slot
Supply Voltage	24 VDC
Current Consumption	Max. 0.35 A
Dimensions	240 mm x 140 mm x 85 mm
Weight	Approx. 1.6 kg
Power Consumption	Approx. 8.4 W at 24 VDC and 0.35 A maximum

PLC Processing and Industrial Network Functions

The 07KT98 executes PLC control logic while managing onboard digital and analog signals. It supports two EIA RS-232 ports for programming and debugging, while the CS31 EIA RS-485 interface connects distributed I/O devices. In addition, the integrated ARCNET interface supports peer-to-peer controller communication.

The configurable I/O channels allow the unit to handle mixed signal requirements. Analog inputs accept voltage, current, and Pt100 sensor signals, while analog outputs provide voltage or current signals. Furthermore, the integrated high-speed counter supports frequencies up to 50 kHz across seven operating modes.

Frequently Asked Questions

Q: Can the 07KT98 operate without remote I/O modules?
A: Yes. The supplied specifications identify the unit as capable of standalone PLC operation with integrated onboard I/O.

Q: Which communication interfaces are integrated into the 07KT98?
A: The unit provides two EIA RS-232 ports, one EIA RS-485 CS31 system bus interface, and an ARCNET interface through a BNC connector.

Q: What signal types can the analog channels process?
A: The eight analog inputs support 0-10 V, +/-10 V, 0-20 mA, and Pt100 configurations. The four analog outputs support +/-10 V, 0-20 mA, and 4-20 mA.

Field Installation Guidelines

• Mount the unit securely on the designated controller installation structure and maintain access to all connectors.
• Route RS-232, CS31, ARCNET, digital, and analog signal cables separately where practical to reduce electrical interference.
• Use appropriate shielded cabling for communication and low-level analog signals.
• Terminate cable shields according to the AC31 installation design and site grounding practice.
• Verify the 24 VDC supply polarity and voltage before energizing the unit.
• Check the maximum output loading before connecting field devices to transistor outputs.
• Keep analog signal wiring away from high-current switching conductors and motor cables.
• Inspect the BNC connection and CS31 wiring for secure mechanical engagement before commissioning.
• Back up application programs and configuration data using the supported SmartMedia card function where required.
• Confirm I/O addressing and signal configuration before placing the PLC into automatic operation.

Specifications

• Brand: ABB

Advantages

• High reliability in industrial environments
• Supports continuous operation
• Compatible with major PLC/DCS systems